I find the best meds in the uk for columnaris is myxazin by waterlife and pimafix.
Columanris spots take some getting rid of. So myxazin by waterlife no good.
There this med but it will wipe the beneifical bacteria out in the filter.
So I would only treat in isolation.
Furanol 2 by jbl.
Is the fish with the spots flicking and rubbing?
The black fish in the pic might have whitespot.
It's hard to tell in the pics.
Columanris spots take some getting rid of. So myxazin by waterlife no good.
There this med but it will wipe the beneifical bacteria out in the filter.
So I would only treat in isolation.
Furanol 2 by jbl.
Is the fish with the spots flicking and rubbing?
The black fish in the pic might have whitespot.
It's hard to tell in the pics.
(i had been treating him with pimafix and myxazin anyway
the fish are certainly fine at the moment, showing no difference at all. will be checking water parameters every day while theyre on meds too. of course i'll do just a 100% water change immediately if needed. thanks for the advice 